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## Homework Statement

Hi everyone. I understand the basics of trig graphing; but am having a hard time understanding f(x) first of all what to f and x stand for? Above and beyond that any help understanding f(x) or a link to a website that might help me would be great.

## Homework Equations

f(x).....

## The Attempt at a Solution

I have searched the web and cannot find an answer to my simple question.

I have watched videos on KHAN ACADEMY and understand almost everything about graphs but NOT f(x)

I have watched videos on YouTube